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US2697352A
|
|
Transient pressure gauge
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|
US2675446A
|
|
Circuit-breaker structure
|
|
US2634351A
|
|
Circuit interrupter
|
|
US2631190A
|
|
Circuit breaker latch mechanism
|
|
US2658969A
|
|
Hydraulic circuit breaker actuating mechanism
|
|
US2647973A
|
|
Circuit interrupter
|
|
US2548060A
|
|
Electromagnetic operating and control system
|
|
US2548079A
|
|
Circuit isolating air break switch
|
|
US2574801A
|
|
Power line service restorer
|
|
US2413200A
|
|
Disconnecting switch
|
|
US2452221A
|
|
Fluid blast arc extinguishing circuit breaker
|
|
US2452233A
|
|
Permanent fault isolator time-delay switch
|
|
US2368462A
|
|
Disconnecting switch
|
|
US2368465A
|
|
Power line transfer and disconnect switch
|
|
US2359056A
|
|
High voltage switch
|
|
US2402544A
|
|
High voltage current indicating and insulating means
|
|
US2382786A
|
|
Air blast circuit breaker
|
|
US2413195A
|
|
High potential current transformer means
|
|
US2328171A
|
|
Disconnecting switch
|
|
US2318343A
|
|
Service restoring circuit breaker
|
